Submitted by frustrated_staff t3_127yqm2 in space
UmbralRaptor t1_jeghwlv wrote
Pretty much any software that generates starcharts (eg: stellarium) will show you the actual positions of stars (as seen from earth), considering things like proper motion. That said, this is a high precision thing, so might be extremely non-obvious (Barnard's Star is only 10.3"/year).
We are currently in the process of getting high enough precision to get proper motions for nearby galaxies. Using radial velocities alone could certainly make things misleading, and a lot of large scale maps of the universe tend to prefer going by redshift instead of making additional assumptions about how the universe has expanded.
frustrated_staff OP t1_jegjblx wrote
>(eg: stellarium
Is that free to use/download?
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